Minor preparations for a 0.5 release

[hakonanes]

Description of the change

These are some minor preparations for a 0.5 release:

• Most importantly, diffsims is tested using orix v0.9.0rc2: no code changes were necessary!
• The contributor list is updated. @pc494, if you want a .zenodo.json file here as well, I'll add it. .zenodo.json file added.
• I've updated the Python publish workflow to use the same as with orix. I thought we could test this by releasing 0.5.0rc1 before 0.5.0. This way, I can also test kikuchipy against diffsims 0.5.0.
• Bumped version to 0.5.0rc1
• Updated the license description in setup.py from GPLv3 to GPLv3+, because the license allows for a later v3 license to be used as well. hyperspy does this. There isn't a later v3 as far as I know.
• Removed passing the convention parameter to Rotation.from_euler() which was deprecated in orix 0.9

Question: should we add a black code style check to the CI build action?

Progress of the PR

• [n/a] Docstrings for all functions
• [n/a] Unit tests with pytest for all lines
• [n/a] Clean code style by running black
• Update changelog
• Release orix 0.9
• Revert minial version of orix
• Any other PRs to master before release:
  • Fix hexagonal corners of fundamental sector in stereographic projection #184
  • Loosen angle tolerance in DiffractionLibrary.get_library_entry() from 1e-5 to 1e-2 #185
• Update PyPI secrets

For reviewers

• The PR title is short, concise, and will make sense 1 year later.
• New functions are imported in corresponding __init__.py.
• New features, API changes, and deprecations are mentioned in the
  unreleased section in CHANGELOG.rst.

[pc494]

This looks good to me so far, I do think a .zenodo file would be good.

[hakonanes]

@pc494 could you make me a maintainer of diffsims on PyPI? With the updated publish workflow, we have to add tokens named PYPI_API_TOKEN and TEST_PYPI_API_TOKEN with tokens from both PyPI and TestPyPI to repo secrects (and can delete the PyPI username and password).

[hakonanes]

The meaning of direction=crystal2lab changed from orix 0.8.2 to direction=lab2crystal in 0.9.0. from_euler() is used when generating rotation lists. In order for diffsims to stay consistent, I changed use of from_euler() to use the default direction, which is lab2crystal, and set the minimal version of orix to 0.9.0.

[hakonanes]

See #183 raised by @emichr, which must be fixed before releasing diffsims 0.5.0.

[pc494]

@pc494 could you make me a maintainer of diffsims on PyPI? With the updated publish workflow, we have to add tokens named PYPI_API_TOKEN and TEST_PYPI_API_TOKEN with tokens from both PyPI and TestPyPI to repo secrects (and can delete the PyPI username and password).

I was considering make pyxem team credentials with PyPi to clean up this part of the workflow? Would now be a suitable time to do that?

[hakonanes]

Do you mean making a pyxem team PyPI user? With the pyxem mail?

[pc494]

Do you mean making a pyxem team PyPI user? With the pyxem mail?

That was my thought?

[hakonanes]

I'm OK with that. Could you send me the password for PyPI and TestPyPI after creation?

[pc494]

I'm OK with that. Could you send me the password for PyPI and TestPyPI after creation?

I'll find a secure way to circulate those details to you. The main point was to use them as the automated once in github. Also, before then I'll add you (normal account) to diffsims, sorry for the delay on that.

[hakonanes]

The two failing tests were fixed in #184.

[hakonanes]

I'll fix the conflict myself, and then this PR is ready.

[pc494]

LGTM, merging.